• Computers and Concrete
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• v.14 no.5
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• pp.577-597
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• 2014

This paper aims to develop a prediction model for the hardened properties of waste LCD glass that is used in concrete by analyzing a series of laboratory test results, which were obtained in our previous study. We also summarized the testing results of the hardened properties of a variety of waste LCD glass concretes and discussed the effect of factors such as the water-binder ratio (w/b), waste glass content (G) and age (t) on the concrete compressive strength, flexural strength and ultrasonic pulse velocity. This study also applied a hyperbolic function, an exponential function and a power function in a non-linear regression analysis of multiple variables and established the prediction model that could consider the effect of the water-binder ratio (w/b), waste glass content (G) and age (t) on the concrete compressive strength, flexural strength and ultrasonic pulse velocity. Compared with the testing results, the statistical analysis shows that the coefficient of determination $R^2$ and the mean absolute percentage error (MAPE) were 0.93-0.96 and 5.4-8.4% for the compressive strength, 0.83-0.89 and 8.9-12.2% for the flexural strength and 0.87-0.89 and 1.8-2.2% for the ultrasonic pulse velocity, respectively. The proposed models are highly accurate in predicting the compressive strength, flexural strength and ultrasonic pulse velocity of waste LCD glass concrete. However, with other ranges of mixture parameters, the predicted models must be further studied.

• Journal of Korean Academy of Nursing Administration
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• v.9 no.1
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• pp.103-112
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• 2003

Purpose : This study was designed to describe the economic awareness, economic knowledge, and attitude toward cost-effectiveness in nursing of hospital nurses. Method : The sample included 272 nurses conveniently selected from 5 tertiary care hospitals. Data were collected on general characteristics of nurses, the economic awareness level, the knowledge level of economics, and the attitude toward cost-effectiveness. Data were analyzed using SPSS PC version 10.0. Result : 1) The mean of economic awareness level of hospital nurses was 44.87 (SD=3.53) with a possible range of 5${\sim}$50. The mean of the knowledge level of economics was 58.3 (SD=11.9) with a possible range of 0${\sim}$100. 2) The mean of attitude toward cost-effectiveness in nursing was 39.95 (SD=5.01) with a possible range of 5${\sim}$50, which means moderately positive. 3) Analyzing the relationships between economic awareness level and knowledge level of economics, and attitude toward cost-effectiveness, the knowledge level of economics was positively related with the economic awareness level (r=.192, p=.002) and the attitude (r=.133, p=.029). The economic awareness level was positively related with the attitude (r=.470, p=.000). 4) Backward multiple regression revealed that the linear combination of economic awareness, job position, place of employment, and the presence of CQI committee accounted for 26.1% of the variance in the attitudes toward cost-effectiveness nursing care. Conclusion : Findings reveal that RNs lack basic knowledge of economics and its link to nursing practice, yet, they want a voice in economic decision making. In an effort to fill the void of economic knowledge and respond to nurses' call for greater input, in-service programs and curricula for generic programs must be developed.

• Journal of Oral Medicine and Pain
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• v.40 no.4
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• pp.155-162
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• 2015

Purpose: The association between pain and sleep is described as a vicious cycle and psychological distress is well known as comorbid condition in the patients with pain and sleep problems. The aim of the study was to evaluate the prevalence of self-reported sleep disturbance and its relationship to clinical and psychological profiles in temporomandibular disorder (TMD) patients. Methods: The sample consisted of 123 TMD patients (90 women and 33 men), with a mean age of $39.9{\pm}15.4years$. Self-report measures of sleep quality, pain and psychological profile were conducted via the Pittsburgh Sleep Quality Index (PSQI), the Brief Pain Inventory and the Symptom Checklist-90-Revision at the initial visit. The primary diagnosis of TMD were categorized as TMD with internal derangement without pain, TMD with joint pain, TMD with muscle pain and TMD with joint-muscle combined pain. The chi-square test, independent t-test, oneway ANOVA and multiple linear regression analysis were used for statistics. Results: The patients was grouped as good sleepers (n=32, scores of 5 and lower) and poor sleepers (n=91, scores of 6 and higher) according to the recommended cutoff point of the global PSQI score (>5). TMD patients with pain showed poor sleep quality than TMD patients with internal derangement without pain. Poor sleepers had high pain interference and elevated psychological distress. Among them, pain interference and depression were significant predictors to sleep quality. Conclusions: The results suggest that sleep disturbance is a prevalent complaint in TMD patients, and sleep problems in TMD patients are associated with pain and psychological distress.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.8
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• pp.3983-3988
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• 2016

Background: Cervical cancer though preventable is still the leading cause of cancer death among women secondary to breast cancer. Persistent infection with HPV has been causally linked to the disease. A school based HPV vaccination program was introduced in late 2010 in Malaysia and nurse support is essential for its success. Objectives: To determine nurses knowledge and attitudes about HPV infection and its vaccines, and factors associated with their knowledge. Materials and Methods: This cross-sectional study was conducted among nurses working at primary health clinics in Kelantan from mid-June till the end of July 2014. Its involved 330 nurses selected through multistage random sampling. A validated self-administered questionnaire consisting of 11 items for the knowledge domain and eight items for the attitude domain was used. Results: The response rate of the study was 93.7%. The mean knowledge and mean attitude (SD) scores were 5.37 (1.76) and 29.8 (3.51) respectively. Only 24% knew that HPV is the most common sexually transmitted infection and 67% correctly answered that Gardasil vaccine can protect against four types of HPV. Nearly 60% of participants wrongly answered that HPV vaccines cannot be offered to sexually active women. Likewise, 70.9% participants were not aware that HPV vaccine may be appropriate for females aged 9 through 26 years. Though 90% of participants believed that the vaccine is safe, nearly half of them were unsure about efficacy. From multiple linear regression analysis, among the factors tested only participant's level of education showed a statistically significant association with the HPV knowledge score (p <0.001). Conclusions: This study indicates nurses have favorable attitudes towards HPV vaccination; however they have significant knowledge deficit and major misunderstanding in critical knowledge items. Among the factors tested, nursing qualification is the only factor that is significantly associated with the nurses knowledge score.

• Journal of Digital Convergence
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• v.12 no.6
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• pp.457-465
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• 2014

Purpose: The purpose of this study was to identify degree of quality of life and recovery of mental disorder, to determine the factors affecting the quality of life. Methods: The data were collected from May 20 to 27 2013. Data were collected by questionaire from 310 individuals with mental disorder. The instruments for this study were Happy-Quality of Life Scale(Happy-QoL), Recovery. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients, multiple linear regression with the SPSS/WIN 18.0 program. Results: The degree of quality of life and recovery of mental disorder were lower than in the middle. The significant factors influencing quality of life were recovery(${\beta}=.66$, p<.001) and average monthly household income(${\beta}=.09$, p=.039). Conclusion: It is necessary to develop the program that increasing the level of recovery and quality of life.

• Journal of Digital Convergence
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• v.16 no.3
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• pp.553-560
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• 2018

This study aimed to quantify the attitude toward doping among handball players and to identify the influence of players' demographic information, knowledge of doping, education of anti-doping on the attitudes toward doping. 385 elite handball players (193 adolescent players, 165 adult players) were participated in this study and filled in the questionnaire about demographic information, knowledge of doping, education of anti-doping and Performance Enhancement Attitude Scale (PEAS). Collected data were analyzed by Stepwise multiple linear regression. Adult players were more generous about doping than adolescents, and, adolescent players' attitudes toward doping were influenced by their gender and age. In adults, attitudes toward doping were related with only the gender. These results would be useful information to develop the effective anti-doping strategy for handball play.

• Journal of Digital Convergence
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• v.18 no.11
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• pp.417-425
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• 2020

This study investigated predictors of the behavior related to particulate matter in nursing students. The participants in this descriptive study were 186 nursing students at K university in G city from May 1 to 14 in 2018. Collected data were analyzed by t-test, one-way ANOVA, Pearson's correlation coefficient, and multiple linear regression using SPSS WIN 18.0 program. The level of knowledge(10.6/15), attitude(59.94/75) and behavior(42.56/60) were relatively high. The significant predictors of the behavior were attitude(β=.591, p<.001), smoking(β=-.134, p=.049) and respiratory disease(β=.133, p=.025), and explained 40.1% of it. Educational programs to enhance nursing students' health promoting behaviors against particulate matter must be focused on attitude change.

• Journal of Korean Society for Quality Management
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• v.44 no.2
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• pp.341-356
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• 2016

Purpose: The purpose of this paper is to study whether the adoption of Six Sigma quality management by a firm positively affects its financial performance. The correlation between the duration of Six Sigma implementation period and the financial status of the firm is investigated as well. Methods: We conduct the analysis using data from Manufacturing Industry Productivity Panel Survey 2013 provided by Korea Productivity Center and Ministry of Trade, Industry and Energy. Propensity score matching is used to reduce sample selection bias of observational study. Furthermore, we use multiple linear regression in order to study the relationship between the implementation of Six Sigma quality management and financial performance. The return on assets and ratio of net income to net sales are considered as dependent variable and implementation of Six Sigma as independent variable. Results: The indication of this analysis is that implementation of Six Sigma quality management does not significantly enhance financial status. The firms that adopted Six Sigma quality management were categorized into three groups according to the implementation period. Comparison of each group with the firms that do not adopt Six Sigma quality management does not show statistically significant enhancement of financial status. Conclusion: In conclusion, both adoption and duration of six sigma quality management do not affect financial performance significantly.

• Journal of Korean Biological Nursing Science
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• v.13 no.3
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• pp.229-237
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• 2011

Purpose: The objective of this study was to investigate the relationships between sleep quality, fatigue, depression and health promoting behavior by shift-work patterns in university hospital nurses. Methods: A cross-sectional, descriptive survey was conducted using a convenient sample. The self-administered questionnaires were given to 165 nurses (shift workers 91, non-shift workers 74) employed in two university hospital located in Seoul and Gyeunggi-do. Data were collected from February to March, 2010. Results: The shift workers showed significantly lower sleep quality and health promoting behavior, and higher fatigue than non-shift workers. There were significant correlations between fatigue, depression and health promoting behavior in shift workers. There were significant correlations between sleep quality, fatigue, depression and health promoting behavior in non-shift workers. In multiple linear regression analysis, after controlling for total work experiences, predictor of health promoting behavior in shift workers was only fatigue (${\beta}$=-.29, p<.001). Predictors of health promotion behavior in non-shift workers were depression (${\beta}$=-.37, p=.002) and fatigue (${\beta}$=-.27, p=.023). Conclusion: This study failed to provide a clear explanation why sleep quality does not have a comparable effect on health promotion behaviors of shift-workers as well as non-shift workers. However, future research is needed to determine the various risk factors influencing on health promotion behaviors by which shift-work pattern exacerbates fatigue.

• Research in Community and Public Health Nursing
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• v.29 no.1
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• pp.54-64
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• 2018

Purpose: The purpose of this study is to identify factors influencing burnout in primary family caregivers of Home Health Care Patients. Methods: Data were collected from 121 primary family caregivers of home health care patients in three different hospitals in 'D' metropolitan city and the study was conducted from August 10, 2016 to January 17, 2017. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's Correlation Coefficient, Stepwise Multiple Linear Regression. Results: Mean scores for the nursing needs of the participants were $3.54{\pm}0.79$, the family functions were $1.24{\pm}0.58$, the burnouts were $2.74{\pm}0.49$. The burnouts were positively correlated with the nursing needs but inversely correlated with the family function. The factor that had the greatest influence on the burnouts of primary family caregivers of Home Health Care was family function (${\beta}=-.245$, p=.001), followed by patients' daily activity (${\beta}=-.213$, p=.014), age (${\beta}=.208$, p=.032), monthly nursing services cost (${\beta}=-.196$, p=.044) and nursing needs (${\beta}=.129$, p=.014). The Explanatory Power of Models was 23%. Conclusion: Individually customized home care nursing intervention programs are required to be provided in accordance with patient's family function and daily activity, monthly home care nursing service cost, nursing needs and general characteristics of primary caregivers of Home Health Care Patients such as their age, the number of family members living together, sex and the name of disease.